JR operator network boundary map/google earth overlay?

[bluejeans]

The ones on the official JR sites aren't really useful for me since they're in diagram form, I was hoping for something like a google earth overlay.  Or even a map that's just less diagram-like (e.g shows lines and stations as they appear geographically, not like a diagram you'd see at the station)

[toc36]

Google Maps shows and labels the rail lines. 

[korat]

This may or may not help, depending on what you're looking to do.

[bluejeans]

Google Maps shows and labels the rail lines. 

 

I'm after something that will show the boundaries between all the different JR companies. 

 

[bluejeans]

This may or may not help, depending on what you're looking to do.

That's an excellent map, I wish the english maps were this detailed

[Sacto1985]

That map is almost correct, except I believe boundary between JR East and JR West on the Sea of Japan coastal region is at Itoigawa, where just east of it is the change between 20 kW AC overhead power and 1,500 V DC overhead power. At least that was the case when the Hokuriku Main Line was designated from Kanazawa all the way east to Naoetsu Station.

[Yavianice]

The maps in this app https://tokyostudio.jp/app are very nice. They also sell these in hard copy. Though as far as I know they cannot be accessed without the app. The app is available for iPhone and Android.